How To Properly Measure A Sliding Screen Door. Measure from the top of the track at one end of the door down to the threshold on the ground with a tape measure. Measure the opening width (horizontally) as shown below.
To measure a screen door, hold the measuring tape inside the door frame about 6 inches from the top and pull it across to the opposite side. Have a door screen on the interior side of the sliding door you will need to reconfigure the lock/latch. Measure your door opening this screen door is designed to fit slider door openings between 32 and 36 without modifications.
Measure the opening width (horizontally) as shown below.
As well, if you shorten the old rails the old mortise may interfere with the new miter cut and make the frame unusable when you try to reassemble the corners back in. Lets start diy security screen door installation a security door, first measure and get idea from the internet and ask some expert about that can be either an exterior or interior unit. Go to page 9 to complete this modification. If your door sill is slanted, measure to the lowest part of the sill that will rest beneath the screen door.